Thanks a lot RhodiumToad on IRC for suggestion of setting HASHES, MERGES on OPERATOR =.
Now we have other problem: how do we set these flags on upgrade to new version of extension? Dropping an OPERATOR = will drop all indexes an views depending on it so isn't really an option.
Also, if someone can sneak "ERROR: FULL JOIN is only supported with merge-joinable or hash-joinable join conditions" keywords into https://www.postgresql.org/docs/current/xoper-optimization.html#id-1.8.3.17.8 it would greatly help future extension writers - it's not possible to google this page out by the error message.
On Thu, May 16, 2019 at 7:05 PM Darafei "Komяpa" Praliaskouski <me@komzpa.net> wrote:
Hi!
Greetings from OSGeo Code sprint in Minneapolis :)
We're trying to make FULL JOIN on equality of geometry and can't figure out why it doesn't work.
Here's reproducer, it works on bytea but not on PostGIS geometry throwing out
ERROR: FULL JOIN is only supported with merge-joinable or hash-joinable join conditions
